okay guys I have heard this and heard this maybe you can help The early 70's 400m to a 460 swap (for manual tranny's)I have always heard of guys using a 360/390 flywheel on the 460 now this was before started making this combo. I had a ford guru tell me that this would beat the mains out of the 460 because they weren't balanced the same but this same guru said you could use a 360/390 auto flywheel on a 460 with no problem.... my question is if they manual wasn't balanced right then the auto wouldn't be either right??? can you do this or will it tear up your 460??



FORDS always look better when pulling a CHEVY

 

The 360-390 engines that had manual trannys have a flywheel that can be swapped to the 460-429 as long as they are both INTERNALLY balanced. This would be the same with autos so long as they are both internally balanced.

The bell from a 351M-400 will fit on the 460 block.
All take the 11" clutch.

Make sure there is no weight on the flywheel, or the bearings will be "pounded".

 

well I'm doing a 400 to 68 429 swap (auto) so I have none of these concerns but I have a 76 highboy wrecker that may get the 360 to 460 swap got a couple of 460 laying around time to put then in something.now did was there certian years that the 360 / 460 was balanced diffrent???? because i have a 76 360 72 360 71 360 and 68 429 75 460 74 460 just wondering





FORDS always look better when pulling a CHEVY

 

1978 was the last year for internal balancing for 460 engines. That would mean 1979 and newer are externally balanced. I'm not sure that this is the case for 360 engines.

You can use your 400 tranny with the 429 engine, but not the flywheel (flexplate). The 429 should have a flexplate on it now, if it has a flywheel instead, you can trade that for a flexplate from a 360/390/429/460. You shouldn't have to change your engine mount towers, but you will have to swap the mounts.

When you get around to swapping the 360 for 460, you'll have to look for a tranny or bell from a 351M/400/429/460. The flywheel/flexplate will work from the 360 to 460. You will also need to change the mounts and towers to fit the 460. The towers are too tall.

Hope this helps out.

 

yep I got all them parts got a 79 2wd with a 400 4 speed got the 76 360 4 speed and the 75 460 bored 30 over hey have you ever seen a set of 1968 mercury montago 429 motor mounts???? I think they will drop right into my 400 perches will let you guys know when i'm done they look like the afet market 460 motor mounts



FORDS always look better when pulling a CHEVY

 

Yeah, all you have to do is swap the mounts, the perches should work fine.

 

A 360/390 flywheel works fine on a 78 or older internal balance 429/460. You must use a 400m diaphram clutch and pilot bushing. On some early 429s the 400 bushing wont fit the crank. You can machine it to fit or cut the big end off a 429 bushing.

 

gray, I thought you could use any 11" clutch for a 460, 400 or 360? As long as the splines are the same for your tranny? This isn't true then? Just wondering.

 

The 360 definatly wont work and im not sure on the 460 but dont think it will either. Im sure they will all bolt to the flywheel but wont work inside a 351/400m bellhousing. Those other clutchs are all 3 finger type and they stick out to far and wont fit. The 400m diaghaphram clutch is a 12 inch versus 11 anyway. The problem here is the diaaphram arent easy to find.

 

Yep, the 400 does have the 12" disc. But the 400 flywheel won't fit on the 429/460, so it doesn't matter.

The 360/390 flywheel will fit on the 429/460, so why wouldn't the clutch disc and pressure plate? Unless your saying the 351M/400/429/460 bell housing is not big enough except if the clutch is diaphram type? I didn't know this, thanks.

The 360/390/460 lists 11,11.5,12" clutches at http://www.autowhiz.com/pages/clutch.php

 

[updated:LAST EDITED ON 04-Jan-03 AT 05:20 PM (EST)]Yep they the 360/390 clutchs wont fit in the 351/400 bell. Its actually not deep enough for the 3 finger clutchs. Im not sure on the 429/460 bell but they are alot harder to come by and alot of people doing this swap already have the M bell to start so this is the lowest cost effective way to go. Some 360/390 flywheels have 2 sets of mounting holes while others have only 1. If you use a 390 flywheel with 1 set or the one with both the 400 dia clutch bolts right up. I have heard of people getting a 360 flywheel with only 1 set that it wont. So I would say a 390 flywheel is the best choice to start with but not the only choice. Andy

 

it just a info on this subject i swap a 1986 460 my mustang i have a 4 speed trany that bolt on 351m bellhousing but do you think the 351m flywheel and clutch fit on my 460

thank

 

no they wont marco

 

I was told that Ford did a one year 460 to manual build-up. It was in 83' and the bell is bigger than the 351M to allow the use of the 460 12" flywheel and clutch. I haven't visually seen it but allot of wrecking yards agree with this. My 351M bell and 360 flywheel/clutch works just fine for me so I am in no hurry do this mod. Just thought I would pass this on.

Greg
71' F250,4X4 460ci-NP435
43 ****** MB204109 289ci

 

[updated:LAST EDITED ON 07-Jan-03 AT 06:36 PM (EST)]Greg, you are right about one thing the true 429 or 460 bell is deeper by about 3/8ths of an inch. you guys looking for diafram clutches, the 6.9 diesels had them and they work great for this when using the 351 or 400 bell.

when I did my conversion of 1970 429 to NP435 I wound up with this,

1977 351m/400 bellhousing
1970 429 torino cobra 176 tooth count flywheel
460 starter with the solinoid (better than old style 429 starter)
1985 6.9 Int. diesel clutch disc and pressure plate
and I had to have the pilot bushing turned down to fit the smaller hole in the end of the 429 crankshaft so the splines of the input for the transmission would not hit the pilot bushing.

my brother did a 400 to 429 swap in his 77 1/2ton and his bolted right up to his automatic without any work at all. so I assume if you are doing this with an auto there would be no problem nor would there be a problem with the corect 429/460 bellhousing. the only time there should be problems is when useing the 351m/400 belhousing, although I have heard a few people that said it worked I have a hard time beliveing them since I have done it.

yes a 352 360 390 flywheel should fit and not destroy the 78 or older 429 or 460 but didn't they have a diffrent tooth count and diameter than the other engine familys?

EDIT: also I have seen a few mid 70's ford trucks that had J code engines and A code trannys, so I suspect they were some built with 460 and NP435 combo.